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ignificant enhancements include:- Steel frame design has been added according to the Norsok N-004 2013 code.– Steel frame design according to the API RP 2A-WSD 21st edition code has been updated for supplements 1, 2 and 3.– Auto lateral wind load has been added according to the API 4F 2013 code.– The Chinese section-property database files have been enhanced by adding new sections.– A bilinear Maxwell damper has been implemented as a new link property. This device is a linear spring in series with a dashpot whose force-velocity relationship exhibits bilinear viscous behavior, typical of certain oil dampers having a relief valve.– A friction-spring hysteretic damper has been implemented as a new link property. The force-displacement relationship exhibits linear slipping...